NR-283 – Pathophysiology | Comprehensive Study
Guide & Examination Preparation Disease Processes,
Clinical Manifestations, Body System Disorders, and
Nursing Concepts Questions with Detailed Rationales |
Latest 2025–2026 Update
Question 1
A patient with chronic obstructive pulmonary disease (COPD) develops right-sided
heart failure. This is an example of which type of cellular adaptation?
A. Metaplasia
B. Hypertrophy
C. Hyperplasia
D. Atrophy
Answer: B. Hypertrophy
Rationale: Hypertrophy is an increase in cell size. In COPD, chronic hypoxemia
causes pulmonary hypertension, leading to increased workload on the right
ventricle. This causes myocardial hypertrophy as the cardiac muscle cells increase
in size to compensate for the increased workload. Hypertrophy is a reversible
adaptation but can progress to failure if the stress continues.
Question 2
A patient who smokes cigarettes develops chronic bronchitis. The lining of the
bronchi changes from ciliated pseudostratified columnar epithelium to stratified
squamous epithelium. This process is called:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: C. Metaplasia
,Rationale: Metaplasia is the reversible replacement of one differentiated cell type
with another. In chronic smokers, the normal ciliated columnar epithelium of the
airways is replaced by stratified squamous epithelium. This is an adaptive response
to chronic irritation, but it results in loss of protective ciliary function and increases
the risk of malignant transformation.
Question 3
A 65-year-old patient who was on prolonged bed rest develops muscle wasting.
This is an example of:
A. Hypertrophy
B. Hyperplasia
C. Atrophy
D. Metaplasia
Answer: C. Atrophy
Rationale: Atrophy is a decrease in cell size resulting from decreased workload,
denervation, decreased blood supply, or inadequate nutrition. Prolonged bed rest
reduces muscle use, leading to disuse atrophy. This is reversible with restoration of
activity, but the cells decrease in size to conserve energy.
Question 4
A patient with Barrett's esophagus has normal squamous epithelium replaced by
columnar epithelium similar to that found in the stomach and intestines. This is an
example of:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: C. Metaplasia
Rationale: In Barrett's esophagus, chronic acid reflux causes the normal squamous
epithelium of the lower esophagus to be replaced by columnar epithelium. This
metaplastic change is adaptive to protect the esophagus from acid, but it is a
,premalignant condition that significantly increases the risk of esophageal
adenocarcinoma.
Question 5
Which cellular change is considered a precursor to malignancy?
A. Hypertrophy
B. Metaplasia
C. Hyperplasia
D. Dysplasia
Answer: D. Dysplasia
Rationale: Dysplasia is an abnormal change in cell size, shape, and organization.
It is characterized by atypical cellular changes that are not yet malignant but have
the potential to become cancerous. Dysplasia is considered a precancerous
condition and can progress to carcinoma in situ and invasive cancer if not treated.
Question 6
A patient presents with localized redness, heat, swelling, and pain at the site of a
wound. These signs indicate:
A. Infection
B. Acute inflammation
C. Chronic inflammation
D. Tissue necrosis
Answer: B. Acute inflammation
Rationale: The classic signs of acute inflammation are redness (rubor), heat
(calor), swelling (tumor), pain (dolor), and loss of function (functio laesa). These
result from vasodilation (redness, heat), increased vascular permeability (swelling),
and release of chemical mediators (pain). This represents the body's immediate
response to tissue injury.
, Question 7
Which type of white blood cell is the FIRST to arrive at the site of acute
inflammation?
A. Lymphocytes
B. Neutrophils
C. Monocytes
D. Eosinophils
Answer: B. Neutrophils
Rationale: Neutrophils are the first leukocytes to arrive at the site of acute
inflammation, typically within minutes to hours. They are phagocytic cells that
engulf and destroy bacteria and cellular debris. This is followed by monocytes
(which mature into macrophages) within hours to days.
Question 8
A patient with a viral infection has an elevated lymphocyte count. This immune
response is characterized by:
A. Adaptive immunity
B. Innate immunity
C. Passive immunity
D. Natural immunity
Answer: A. Adaptive immunity
Rationale: Lymphocytes (T cells and B cells) are the primary cells of adaptive
(specific) immunity. They recognize specific antigens and mount a targeted
immune response. Elevated lymphocytes in viral infections indicate an adaptive
immune response, where T cells directly kill infected cells and B cells produce
antibodies.
Question 9
A patient experiences an anaphylactic reaction after receiving penicillin. This is
classified as which type of hypersensitivity reaction?
A. Type I (Anaphylactic)
B. Type II (Cytotoxic)
Guide & Examination Preparation Disease Processes,
Clinical Manifestations, Body System Disorders, and
Nursing Concepts Questions with Detailed Rationales |
Latest 2025–2026 Update
Question 1
A patient with chronic obstructive pulmonary disease (COPD) develops right-sided
heart failure. This is an example of which type of cellular adaptation?
A. Metaplasia
B. Hypertrophy
C. Hyperplasia
D. Atrophy
Answer: B. Hypertrophy
Rationale: Hypertrophy is an increase in cell size. In COPD, chronic hypoxemia
causes pulmonary hypertension, leading to increased workload on the right
ventricle. This causes myocardial hypertrophy as the cardiac muscle cells increase
in size to compensate for the increased workload. Hypertrophy is a reversible
adaptation but can progress to failure if the stress continues.
Question 2
A patient who smokes cigarettes develops chronic bronchitis. The lining of the
bronchi changes from ciliated pseudostratified columnar epithelium to stratified
squamous epithelium. This process is called:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: C. Metaplasia
,Rationale: Metaplasia is the reversible replacement of one differentiated cell type
with another. In chronic smokers, the normal ciliated columnar epithelium of the
airways is replaced by stratified squamous epithelium. This is an adaptive response
to chronic irritation, but it results in loss of protective ciliary function and increases
the risk of malignant transformation.
Question 3
A 65-year-old patient who was on prolonged bed rest develops muscle wasting.
This is an example of:
A. Hypertrophy
B. Hyperplasia
C. Atrophy
D. Metaplasia
Answer: C. Atrophy
Rationale: Atrophy is a decrease in cell size resulting from decreased workload,
denervation, decreased blood supply, or inadequate nutrition. Prolonged bed rest
reduces muscle use, leading to disuse atrophy. This is reversible with restoration of
activity, but the cells decrease in size to conserve energy.
Question 4
A patient with Barrett's esophagus has normal squamous epithelium replaced by
columnar epithelium similar to that found in the stomach and intestines. This is an
example of:
A. Hypertrophy
B. Hyperplasia
C. Metaplasia
D. Dysplasia
Answer: C. Metaplasia
Rationale: In Barrett's esophagus, chronic acid reflux causes the normal squamous
epithelium of the lower esophagus to be replaced by columnar epithelium. This
metaplastic change is adaptive to protect the esophagus from acid, but it is a
,premalignant condition that significantly increases the risk of esophageal
adenocarcinoma.
Question 5
Which cellular change is considered a precursor to malignancy?
A. Hypertrophy
B. Metaplasia
C. Hyperplasia
D. Dysplasia
Answer: D. Dysplasia
Rationale: Dysplasia is an abnormal change in cell size, shape, and organization.
It is characterized by atypical cellular changes that are not yet malignant but have
the potential to become cancerous. Dysplasia is considered a precancerous
condition and can progress to carcinoma in situ and invasive cancer if not treated.
Question 6
A patient presents with localized redness, heat, swelling, and pain at the site of a
wound. These signs indicate:
A. Infection
B. Acute inflammation
C. Chronic inflammation
D. Tissue necrosis
Answer: B. Acute inflammation
Rationale: The classic signs of acute inflammation are redness (rubor), heat
(calor), swelling (tumor), pain (dolor), and loss of function (functio laesa). These
result from vasodilation (redness, heat), increased vascular permeability (swelling),
and release of chemical mediators (pain). This represents the body's immediate
response to tissue injury.
, Question 7
Which type of white blood cell is the FIRST to arrive at the site of acute
inflammation?
A. Lymphocytes
B. Neutrophils
C. Monocytes
D. Eosinophils
Answer: B. Neutrophils
Rationale: Neutrophils are the first leukocytes to arrive at the site of acute
inflammation, typically within minutes to hours. They are phagocytic cells that
engulf and destroy bacteria and cellular debris. This is followed by monocytes
(which mature into macrophages) within hours to days.
Question 8
A patient with a viral infection has an elevated lymphocyte count. This immune
response is characterized by:
A. Adaptive immunity
B. Innate immunity
C. Passive immunity
D. Natural immunity
Answer: A. Adaptive immunity
Rationale: Lymphocytes (T cells and B cells) are the primary cells of adaptive
(specific) immunity. They recognize specific antigens and mount a targeted
immune response. Elevated lymphocytes in viral infections indicate an adaptive
immune response, where T cells directly kill infected cells and B cells produce
antibodies.
Question 9
A patient experiences an anaphylactic reaction after receiving penicillin. This is
classified as which type of hypersensitivity reaction?
A. Type I (Anaphylactic)
B. Type II (Cytotoxic)
